[YARN-4025] Deal with byte representations of Longs in writer code

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.9.0, 3.0.0-alpha1
• Component/s: timelineserver
• Assignee: Sangjin Lee
• Reporter: Vrushali C
• Created: 07/Aug/15 04:48
• Updated: 25/Oct/19 20:26
• Resolved: 19/Aug/15 17:01

Description

Timestamps are being stored as Longs in hbase by the HBaseTimelineWriterImpl code. There seem to be some places in the code where there are conversions between Long to byte[] to String for easier argument passing between function calls. Then these values end up being converted back to byte[] while storing in hbase.

It would be better to pass around byte[] or the Longs themselves as applicable.

This may result in some api changes (store function) as well in adding a few more function calls like getColumnQualifier which accepts a pre-encoded byte array. It will be in addition to the existing api which accepts a String and the ColumnHelper to return a byte[] column name instead of a String one.

Filing jira to track these changes.